Physics

Problem

Which expression gives the average angular velocity

\omega_{\text{avg}}

of a rigid body that undergoes an angular displacement

\Delta\theta

during a time interval

\Delta t

? a)

\displaystyle \frac{1}{2}\,\frac{\Delta\theta}{\Delta t}

\displaystyle \frac{\Delta\theta}{2\pi\,\Delta t}

\displaystyle \frac{\Delta\theta}{\Delta t}

\displaystyle 2\,\frac{\Delta\theta}{\Delta t}